Blind man here. "for a few days"??? Seriously? This is like saying "If I only would wear a bra for a week, I could give birth to a child!"
I know blind people who wish their echolocation skills were better.
What I am trying to say: expect months or years for training, not days. Besides, it is not only blind people who have excellent directional hearing, conductors are forced by their trade to be able to point at the fiddle player they want to correct. So it is definitely a skill which can be picked up. But it takes some years to get to a level where it is useful.
I know blind people who wish their echolocation skills were better.
What I am trying to say: expect months or years for training, not days. Besides, it is not only blind people who have excellent directional hearing, conductors are forced by their trade to be able to point at the fiddle player they want to correct. So it is definitely a skill which can be picked up. But it takes some years to get to a level where it is useful.